[rules-users] For each loop in drools

Tina Vießmann tviessmann at stud.hs-bremen.de
Thu Aug 12 15:18:00 EDT 2010


Yeah, I think using a normal for loop is better. I just came up with the 
question because I wanted to use a for-each-loop in a simple 
exercise-scenario, because it's a bit faster to write...

Anyway, what I wanted to do is:

     for (Value value : $eventSet) {
         // raise hell
     }

Thats where I get the type mismatch.


Thanks :)
Tina


> E.g., Joshua Bloch, "Effective Java", Item 46: Prefer *for-each loops* 
> to traditional for loops. Plain old Java.
> -W
>
> 2010/8/12 Mauricio Salatino <salaboy at gmail.com <mailto:salaboy at gmail.com>>
>
>     Probably I misread the question.. I thought that Tina was asking
>     about for each loops in Drools Flow.
>     If not where are you using for each??
>     A java for each each node in the RHS?
>
>     Greetings.
>
>     2010/8/12 Wolfgang Laun <wolfgang.laun at gmail.com
>     <mailto:wolfgang.laun at gmail.com>>
>
>         I'm not sure whether you and Salboy are on the same
>         wavelength. Tina, please do provide more
>         details where and what you want to for-each-loop. Guessing is
>         a waste of time...
>         -W
>
>         2010/8/12 Tina Vießmann <tviessmann at stud.hs-bremen.de
>         <mailto:tviessmann at stud.hs-bremen.de>>
>
>             Oh, do I need a loop xml definition? Good to know. -.-
>
>             Could  you give me a link with a good explanation/example
>             about how to do this?
>
>             Thanks :)
>
>             Tina
>
>
>>             The for each loop in Drools Flow recieves a list of
>>             objects to iterate over it.
>>             Can you share your loop xml definition? and can you check
>>             that the variable that it's using is a list?
>>
>>
>>             On Thu, Aug 12, 2010 at 1:08 PM, Tina Vießmann
>>             <tviessmann at stud.hs-bremen.de
>>             <mailto:tviessmann at stud.hs-bremen.de>> wrote:
>>
>>                 Hi,
>>
>>                 is it possible to use the for each loop in Drools?
>>                 The engine grouses a type mismatch : cannot convert
>>                 from element type
>>                 Object to Value
>>
>>                 Thanks :)
>>                 Tina
>>                 _______________________________________________
>>                 rules-users mailing list
>>                 rules-users at lists.jboss.org
>>                 <mailto:rules-users at lists.jboss.org>
>>                 https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>>
>>
>>             -- 
>>              - CTO @ http://www.plugtree.com
>>              - MyJourney @ http://salaboy.wordpress.com
>>              - Co-Founder @ http://www.jbug.com.ar
>>
>>              - Salatino "Salaboy" Mauricio -
>>
>
>             _______________________________________________
>             rules-users mailing list
>             rules-users at lists.jboss.org
>             <mailto:rules-users at lists.jboss.org>
>             https://lists.jboss.org/mailman/listinfo/rules-users
>
>
>
>         _______________________________________________
>         rules-users mailing list
>         rules-users at lists.jboss.org <mailto:rules-users at lists.jboss.org>
>         https://lists.jboss.org/mailman/listinfo/rules-users
>
>
>
>
>     -- 
>      - CTO @ http://www.plugtree.com
>      - MyJourney @ http://salaboy.wordpress.com
>      - Co-Founder @ http://www.jbug.com.ar
>
>      - Salatino "Salaboy" Mauricio -
>
>     _______________________________________________
>     rules-users mailing list
>     rules-users at lists.jboss.org <mailto:rules-users at lists.jboss.org>
>     https://lists.jboss.org/mailman/listinfo/rules-users
>
>
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>    

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100812/91a2fbe4/attachment.html 


More information about the rules-users mailing list